package com.kylin.demo1;

import java.util.Arrays;
import java.util.HashMap;
import java.util.HashSet;

public class HashMapTest {
    public static void main(String[] args) {
        HashMap<String, String> hashMap = new HashMap<>();
        hashMap.put("1","456");
        System.out.println(hashMap.get("1"));
    }
}
